Microsoft has released a Windows Phone 8 companion app for its new desktop operating systems, Windows 8 and Windows RT.

The app, apparently published just before Windows Phone 8 gets fully detailed on Monday, makes it possible to synchronise photos, videos and music between Microsoft's mobile and desktop devices.

According to the listing information, the app's functionality gets embedded in various Windows 8 features — for example, the user does not need to fire up the app in order to pull photos from their Windows Phone 8 device into their desktop Photos app.

Microsoft officially launched Windows 8 on Friday, and will take the wraps off Windows Phone 8 later today.